CN114991558A - Friction-yield energy consumption self-resetting buckling-restrained brace and assembling method thereof - Google Patents
Friction-yield energy consumption self-resetting buckling-restrained brace and assembling method thereof Download PDFInfo
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 238000004873 anchoring Methods 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 17
- 230000000452 restraining effect Effects 0.000 claims description 5
- 230000004044 response Effects 0.000 abstract description 5
- 210000003205 muscle Anatomy 0.000 abstract description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
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- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention discloses a friction-yield energy consumption self-resetting buckling-restrained brace, which comprises a self-resetting device and a buckling-restrained brace device, wherein the self-resetting device is connected with the buckling-restrained brace through a connecting rod; the self-resetting device comprises a first angle steel, a second angle steel, an outer sleeve, an inner sleeve, an anchoring plate and a resetting rib; the inner sleeve is sleeved on the outer side of the buckling-restrained supporting device, and the outer sleeve is sleeved on the outer side of the inner sleeve; the first angle steel and the second angle steel are respectively installed at two ends of the buckling-restrained supporting device, the first angle steel is fixedly connected with one end of the outer sleeve in a welding mode, and the second angle steel is fixedly connected with one end of the inner sleeve in a welding mode; the anchor board sets up at outer sleeve pipe both ends, and the muscle anchor that resets is on the anchor board. The earthquake energy can be consumed by utilizing the elastic-plastic deformation of the energy-consuming inner core when the earthquake load is small, and the earthquake energy can be consumed by utilizing the elastic-plastic deformation of the energy-consuming inner core and the friction between the inner core and the first angle steel and the second angle steel when the earthquake load is large, so that the response of the structure under the earthquake is reduced.
Description
Technical Field
The invention belongs to the technical field of constructional engineering structures, and particularly relates to a friction-yield energy consumption self-resetting buckling-restrained brace and an assembling method thereof.
Background
The self-resetting buckling restrained brace is a metal damper with a strong resetting function. The traditional self-resetting buckling restrained brace mainly comprises a self-resetting device and a buckling restrained brace. The energy dissipation and vibration reduction mechanism is as follows: the damper generates deformation under the action of an earthquake, the earthquake energy is consumed through the elastic-plastic deformation of the energy consumption inner core, and then the damper returns to the initial state through the resetting force provided by the self-resetting device. However, since the deformation capability of the energy dissipation inner core of the existing self-resetting buckling-restrained brace is limited by the maximum stretching deformation of the resetting rib, the energy dissipation capability of the energy dissipation inner core is difficult to be fully exerted.
Therefore, how to provide a self-resetting buckling-restrained brace with strong deformation capability, strong energy consumption capability and good resetting effect is a problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a friction-yield energy consumption self-resetting buckling-restrained brace and an assembly method thereof, which can consume seismic energy by using the elastic-plastic deformation of an energy consumption inner core when the seismic load is small, and consume the seismic energy by using the elastic-plastic deformation of the energy consumption inner core and the friction between the inner core and a first angle steel and a second angle steel when the seismic load is large, so that the response of a structure under the conditions of medium and small earthquakes is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a friction-yield energy dissipating self-resetting buckling restrained brace, comprising: self-resetting means and anti-buckling bracing means; the self-resetting device comprises a first angle steel, a second angle steel, an outer sleeve, an inner sleeve, an anchoring plate and a resetting rib; the inner sleeve is sleeved on the outer side of the buckling-restrained supporting device, and the outer sleeve is sleeved on the outer side of the inner sleeve; the first angle steel and the second angle steel are respectively installed at two ends of the buckling-restrained supporting device, the first angle steel is fixedly connected with one end of the outer sleeve in a welding mode, and the second angle steel is fixedly connected with one end of the inner sleeve in a welding mode; the anchor plate sets up outer tube both ends, the muscle anchor that resets is in on the anchor plate.
Furthermore, the buckling-restrained brace device comprises an energy-consuming inner core, the energy-consuming inner core comprises a linear energy-consuming inner core and stiffening ribs, and the stiffening ribs are arranged at two ends of the linear energy-consuming inner core.
Furthermore, buckling restrained brace device still includes backing plate and about board, the backing plate sets up in the recess of energy consumption inner core front and back both sides, about board sets up the left and right sides of energy consumption inner core to through the bolt with backing plate fixed connection.
Furthermore, the anchoring plate is provided with a through hole for the insertion of the resetting rib.
A method for assembling a friction-yield energy consumption self-resetting buckling-restrained brace comprises the following steps:
s1, welding stiffening ribs on the linear energy-consumption inner core to form an energy-consumption inner core; arranging base plates in grooves on the front side and the rear side of the energy-consuming inner core, arranging constraint plates on the left side and the right side of the energy-consuming inner core, and fixedly connecting the constraint plates with the base plates through bolts to form an anti-buckling supporting device; the first angle steel is fixedly connected with one end of the energy-consuming inner core through a bolt; the second angle steel is fixedly connected with the other end of the energy-consuming inner core through a bolt;
s2, sleeving the inner sleeve on the outer side of the buckling-restrained supporting device, and sleeving the outer sleeve on the outer side of the inner sleeve; the inner sleeve is connected with the angle steel two-way through welding; the outer sleeve is connected with the first angle steel through welding;
and S3, arranging the anchoring plates at the two ends of the inner sleeve and the outer sleeve, and anchoring the resetting ribs on the anchoring plates.
The invention has the beneficial effects that:
1. compared with the existing self-resetting buckling restrained brace, the deformation amount of the self-resetting buckling restrained brace is not limited by the deformation capacity of the resetting rib, so that the deformation capacity of the self-resetting buckling restrained brace can be further improved.
2. Compared with the existing self-resetting buckling-restrained brace, the self-resetting buckling-restrained brace has the advantages that when the earthquake load is small, the elastic-plastic deformation of the energy-consuming inner core is utilized to consume earthquake energy, the earthquake response of the structure is reduced, when the earthquake load is large, the elastic-plastic deformation of the energy-consuming inner core and the relative friction between the energy-consuming inner core and the first and second angle steels are continuously utilized to jointly consume the earthquake energy, and the energy-consuming capability is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view illustrating an assembling process of the buckling restrained brace apparatus of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a block diagram of the overall structure of the present invention.
Fig. 4 is a schematic view of the assembly process of the present invention.
FIG. 5 is a graph showing the results of comparing the force-displacement curves of example 1 of the present invention with those of comparative example 1.
Wherein, 1 is a buckling restrained brace device, 111 is a straight energy dissipation inner core, 112 is a stiffening rib, and 11 is an energy dissipation inner core; 121 is a restraint plate, 122 is a backing plate, 13 is a first angle steel, 14 is a second angle steel, 2 is an inner sleeve, 3 is an outer sleeve, 4 is an anchoring plate, and 5 is a resetting rib.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a friction-yield energy dissipating self-resetting buckling restrained brace, comprising: a self-resetting device and an anti-buckling support device 1; the self-resetting device comprises a first angle steel 13, a second angle steel 14, an outer sleeve 3, an inner sleeve 2, an anchoring plate 4 and a resetting rib 5; the inner sleeve 2 is sleeved on the outer side of the buckling-restrained supporting device 1, and the outer sleeve 3 is sleeved on the outer side of the inner sleeve 2; the first angle steel 13 and the second angle steel 14 are respectively installed at two ends of the buckling-restrained supporting device 1, the first angle steel 13 is fixedly connected with one end of the outer sleeve 3 through welding, and the second angle steel 14 is fixedly connected with one end of the inner sleeve 2 through welding; the anchoring plates 4 are arranged at two ends of the outer sleeve 3, and the resetting ribs 5 are anchored on the anchoring plates 4. The anchoring plate 4 is provided with a through hole for inserting the resetting rib 5.
The buckling restrained brace device 1 comprises an energy dissipation inner core 11, the energy dissipation inner core 11 comprises a linear energy dissipation inner core 111 and stiffening ribs 112, and the stiffening ribs 112 are arranged at two ends of the linear energy dissipation inner core 111. The buckling restrained brace device 1 further comprises a restraining plate 121 and a backing plate 122, the backing plate 122 is arranged in grooves in the front side and the rear side of the energy dissipation inner core 11, and the restraining plate 121 is arranged on the left side and the right side of the energy dissipation inner core 11 and fixedly connected with the backing plate 122 through high-strength bolts. The stiffening ribs 112 are welded at two ends of the linear energy-consuming inner core 111 so as to enhance the stability of the end part of the energy-consuming inner core 11; the backing plates 122 are placed in the grooves at the front side and the rear side of the energy-consuming inner core 11 to prevent the energy-consuming inner core 11 from buckling along the direction of the strong axis when being pressed; in order to inhibit the buckling of the energy-consuming inner core 11 along the direction of the weak axis thereof when the energy-consuming inner core 11 is pressed, restraining plates 121 are arranged on two sides of the energy-consuming inner core 11; a gap is reserved between the energy-consuming inner core 11 and the peripheral constraint component to ensure that the inner core expands and deforms; the constraint plate 121 and the backing plate 122 are connected by high-strength bolts, and the two components together form a peripheral constraint component of the energy dissipation inner core 11.
The self-resetting device and the buckling-restrained brace are arranged in parallel, and the self-resetting device and the buckling-restrained brace cooperatively deform under the action of load.
Referring to fig. 4, the invention also provides an assembling method of the friction-yield energy consumption self-resetting anti-buckling support, which comprises the following steps:
s1, welding the stiffening ribs 112 on the linear energy dissipation inner core 111 to form an energy dissipation inner core 11; arranging backing plates 122 in grooves on the front side and the rear side of the energy-consuming inner core 11, arranging constraint plates 121 on the left side and the right side of the energy-consuming inner core 11, and fixedly connecting the constraint plates with the backing plates 122 through high-strength bolts to form the buckling restrained brace device 1; the angle steel I13 is fixedly connected with one end of the energy dissipation inner core 11 through a high-strength bolt; the second angle steel 14 is fixedly connected with the other end of the energy dissipation inner core 11 through a high-strength bolt;
s2, sleeving the inner sleeve 2 on the outer side of the buckling-restrained supporting device 1, and sleeving the outer sleeve 3 on the outer side of the inner sleeve 2; the inner sleeve 2 is connected with the second angle steel 14 through welding; the outer sleeve 3 is connected with the first angle steel 13 through welding;
and S3, arranging the anchoring plates 4 at two ends of the inner sleeve 2 and the outer sleeve 3, and anchoring the resetting ribs 5 on the anchoring plates 4.
The invention can be divided into two working stages by taking whether the energy-consuming inner core and the first and second angle steels generate relative displacement as a reference. When the earthquake load is small and does not exceed the designed sliding force of the friction device, the deformation amount of the device is the same as that of the energy-consumption inner core, and the working mechanism of the device is the same as that of the traditional self-resetting buckling restrained brace. When the earthquake load is larger and exceeds the designed friction sliding force, the angle steel I and the angle steel II generate relative displacement with the energy dissipation inner core. Along with the increase of load, the elastic-plastic deformation of the energy-consuming inner core continues to develop, but the reset rib is no longer coordinated with the deformation of the energy-consuming inner core, namely the elastic deformation of the reset rib stops developing, and further the tensile fracture failure of the self-resetting support caused by the insufficient tensile deformation capability of the reset rib can be avoided.
The earthquake energy can be consumed by utilizing the elastic-plastic deformation of the energy-consuming inner core when the earthquake load is small, and the earthquake energy can be consumed by utilizing the elastic-plastic deformation of the energy-consuming inner core and the friction between the inner core and the first angle steel and the second angle steel when the earthquake load is large, so that the response of the structure under the earthquake is reduced. When a large earthquake or a super large earthquake occurs, the earthquake energy can be consumed by utilizing the elastic-plastic deformation of the energy-consuming inner core and the relative friction between the inner core and the angle steel I and the angle steel II. Meanwhile, the device has a self-resetting system, so that the device has the function of reducing the residual deformation of the structure after the earthquake. The reset ribs are anchored on the two anchoring plates and are coordinated with the energy-consuming inner core and the self-resetting device to deform.
Compared with the existing self-resetting buckling restrained brace, the deformation amount of the self-resetting buckling restrained brace is not limited by the deformation capacity of the resetting rib, so that the deformation capacity of the self-resetting buckling restrained brace can be further improved. Compared with the existing self-resetting buckling-restrained brace, the self-resetting buckling-restrained brace has the advantages that when the earthquake load is small, the elastic-plastic deformation of the energy-consuming inner core is utilized to consume earthquake energy, the earthquake response of the structure is reduced, when the earthquake load is large, the elastic-plastic deformation of the energy-consuming inner core and the relative friction between the energy-consuming inner core and the angle steel I and the angle steel II are continuously utilized to jointly consume the earthquake energy, and the energy-consuming capacity is higher.
Example 1
Two-stage self-resetting buckling restrained brace: the thickness of the energy-consuming inner core is 10mm, the length of the stiffening rib is 400mm, the size of the cross section is 200mm multiplied by 10mm, holes are formed at two ends of the stiffening section, and the aperture is 21 mm; the energy consumption section is 1800mm long, and the section size is 50mm multiplied by 10 mm; the right reinforcing section is 400mm long, the cross section dimension is 250mm multiplied by 10mm, the two ends of the reinforcing section are provided with holes, and the hole diameter is 21 mm. The angle steel 1 is 100mm long, and cross-sectional dimension 90mm is 90mm by 90mm, and is 20mm thick, and angle steel I goes up both sides fluting hole, aperture 21mm, and angle steel I carries out fixed connection through high-strength bolt with the power consumption inner core left end, and cross-section coefficient of friction is 0.3, with interior sleeve pipe left end welded connection. The second angle steel is 100mm long, 110mm multiplied by 110mm in cross section size and 20mm thick, the second angle steel is provided with slotted holes on two sides, the aperture is 21mm, the second angle steel is fixedly connected with the right end of the energy dissipation inner core through a high-strength bolt, the friction coefficient of the cross section is 0.3, and the second angle steel is welded with the right end of the outer sleeve. The length of the inner sleeve is 2000mm, the section size is 200mm multiplied by 200mm, the thickness is 20mm, the right side is provided with a groove, and the width of the groove is 20 mm; the length of the outer sleeve is 2000mm, the section size is 250mm multiplied by 250mm, and the thickness is 20 mm. The cross-sectional dimension of the anchoring plate is 300mm multiplied by 300mm, and the thickness is 40 mm. All the steels used in example 1 were Q235, and the yield strength was 290 MPa. The reset steel bars adopt prestressed steel strands, the yield strength is 1403MPa, the length is 2000mm, the diameter is 20mm, and the number is 4.
Comparative example 1
Traditional self-resetting buckling restrained brace: the thickness of the energy-consuming inner core is 10mm, the length of the stiffening rib is 400mm, and the section size is 200mm multiplied by 10 mm; the energy consumption section is 1800mm long, and the section size is 50mm multiplied by 10 mm; the right reinforcing section is 400mm long and the section dimension is 250mm multiplied by 10 mm. The length of the inner sleeve is 2000mm, the section size is 200mm multiplied by 200mm, the thickness is 20mm, the right side is provided with a groove, and the width of the groove is 20 mm; the length of the outer sleeve is 2000mm, the section size is 250mm multiplied by 250mm, and the thickness is 20 mm. The cross-sectional dimension of the anchoring plate is 300mm multiplied by 300mm, and the thickness is 40 mm. In comparative example 1, Q235 was used as the steel material, and the yield strength was 290 MPa. The reset steel bars adopt prestressed steel strands, the yield strength is 1403MPa, the length is 2000mm, the diameter is 20mm, and the number is 4.
Numerical simulations were performed by the ABQUS2020 software for both example 1 and comparative example 1, and the force-displacement curve comparison results for example 1 and comparative example 1 are shown in FIG. 5. When the amount of deformation of the support return rib was 8mm, the amount of deformation of comparative example 1 was 8mm, which was the same as that of example 1. With the increase of the load, when the deformation of the support resetting rib is increased to 24mm, the deformation of example 1 is 32mm, which is 1.5 times of the deformation of comparative example 1, and the two-stage friction-metal energy consumption buckling restrained brace has better deformation capacity.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A friction-yield energy-consuming self-resetting buckling-restrained brace is characterized by comprising: self-resetting means and anti-buckling bracing means; the self-resetting device comprises a first angle steel, a second angle steel, an outer sleeve, an inner sleeve, an anchoring plate and a resetting rib; the inner sleeve is sleeved on the outer side of the buckling-restrained supporting device, and the outer sleeve is sleeved on the outer side of the inner sleeve; the first angle steel and the second angle steel are respectively installed at two ends of the anti-buckling supporting device, the first angle steel is fixedly connected with one end of the outer sleeve in a welding mode, and the second angle steel is fixedly connected with one end of the inner sleeve in a welding mode; the anchoring plates are arranged at two ends of the outer sleeve, and the resetting ribs are anchored on the anchoring plates.
2. The friction-yield energy-consuming self-resetting buckling-restrained brace as claimed in claim 1, wherein the buckling-restrained brace device comprises an energy-consuming inner core, the energy-consuming inner core comprises a straight energy-consuming inner core and stiffening ribs, and the stiffening ribs are mounted at two ends of the straight energy-consuming inner core.
3. The friction-yield energy-consumption self-resetting buckling-restrained brace as claimed in claim 2, wherein the buckling-restrained brace device further comprises a backing plate and a restraining plate, the backing plate is arranged in the grooves at the front side and the rear side of the energy-consumption inner core, and the restraining plate is arranged at the left side and the right side of the energy-consumption inner core and is fixedly connected with the backing plate through bolts.
4. The friction-yield energy-consumption self-resetting buckling-restrained brace as claimed in claim 1, wherein the anchoring plate is provided with through holes for the resetting ribs to penetrate through.
5. The assembling method of the friction-yield energy consumption self-resetting buckling restrained brace is characterized by comprising the following steps of:
s1, welding stiffening ribs on the linear energy-consumption inner core to form an energy-consumption inner core; arranging base plates in grooves on the front side and the rear side of the energy-consuming inner core, arranging constraint plates on the left side and the right side of the energy-consuming inner core, and fixedly connecting the constraint plates with the base plates through bolts to form a buckling-restrained supporting device; the first angle steel is fixedly connected with one end of the energy-consuming inner core through a bolt; the second angle steel is fixedly connected with the other end of the energy-consuming inner core through a bolt;
s2, sleeving the inner sleeve on the outer side of the buckling-restrained supporting device, and sleeving the outer sleeve on the outer side of the inner sleeve; the inner sleeve is connected with the angle steel two-way through welding; the outer sleeve is connected with the first angle steel through welding;
and S3, arranging the anchoring plates at the two ends of the inner sleeve and the outer sleeve, and anchoring the resetting ribs on the anchoring plates.
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| CN101974949A (en) * | 2010-10-15 | 2011-02-16 | 清华大学 | Buckling-restrained brace member consisting of four bound angle steels |
| CN103161238A (en) * | 2013-03-14 | 2013-06-19 | 北京工业大学 | Connecting end portion energy-consuming-type all-steel anti-bending support |
| CN105696719A (en) * | 2016-01-26 | 2016-06-22 | 大连理工大学 | Buckling restrained energy-consuming support structure restrained by adopting GFRP angle steel |
| CN111425038A (en) * | 2020-04-02 | 2020-07-17 | 东南大学 | Non-prestress self-resetting energy dissipation supporting device with variable friction damper |
| CN112359999A (en) * | 2020-11-18 | 2021-02-12 | 山东塞米克工程科技有限公司 | Friction-metal yield composite energy dissipation steel support |
| CN112503125A (en) * | 2020-11-18 | 2021-03-16 | 东北林业大学 | Spiral friction type metal damper with self-resetting function |
| CN113026944A (en) * | 2021-03-19 | 2021-06-25 | 东北林业大学 | Self-resetting buckling-restrained brace with variable friction device |
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